Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
  • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
  • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
  • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
  • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
  • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
  • C10J3/46—Gasification of granular or pulverulent flues in suspension
  • C10J3/48—Apparatus; Plants
  • C10J3/52—Ash-removing devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
  • F23J1/00—Removing ash, clinker, or slag from combustion chambers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
  • F23J1/00—Removing ash, clinker, or slag from combustion chambers
  • F23J1/06—Mechanically-operated devices, e.g. clinker pushers
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
  • C10J2300/00—Details of gasification processes
  • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
  • C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
  • C10J2300/1628—Ash post-treatment
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
  • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
  • F23J2900/01003—Ash crushing means associated with ash removal means

Definitions

• the invention relates to a slag crusher at the outlet of a radiation cooler or gasification reactor with a quench section with a submerged pressure housing, a shaft passing through the housing with rotating cutting blades, with funnel-shaped inlet guide plates and fixed cutting blades.
• Slag crushers are used for crushing coarse, mineral slags and unburned residues, such as those that occur in combustion processes or in the gasification of coal.
• DE 42 20 265 Cl discloses a device for generating gas that can be used in combustion plants.
• the device comprises a reactor housing which is water-cooled with respect to its wall sections.
• a reactor housing Arranged within the reactor housing is a stepped reactor base which carries the gasification material and is subdivided into a plurality of stationary sections and between them into integrated movable sections. Feeds for the gasifying agent are assigned to the movable sections.
• An ash discharge with a discharge screw having crushing elements is provided in the direction of flow of the gasification material behind the reactor base. Above the lower end of the
• the bottom of the reactor is provided with a water-cooled rotating slag crusher with water-cooled breaking teeth on the circumference.
• An ash collection chamber with a discharge screw is arranged below the lower end of the reactor floor, which also has peripheral crushing elements.
• a slag crusher for oil or coal gasification plants developed by the applicant which is arranged at the outlet of a radiation cooler or a gasification reactor with a quenching, quenching or quenching section, the crushing process takes place under the process pressure in a water bath.
• the housing of the slag crusher is designed to be pressure-resistant in accordance with the process conditions.
• the drive shaft of the cutting knives is carried out through the pressure housing by means of a pressure-tight stuffing box sealing system with sealing water.
• the actual breaking process within the pressure housing is carried out by the rotating cutting blades.
• the fixed cutting knives serve as a shoulder or counter bearing during the breaking process of the large pieces of slag by the knives arranged on a rotating shaft.
• a disadvantage of this slag crusher is the central arrangement of the shaft in the pressure housing with the rotating knives between the radial and axial inlet guide plates on both sides and the fixed knives arranged on one side of the radial guide plates.
• the object of the invention is therefore that
• the arrangement and design of the rotating and stationary knives according to the invention ensure a controlled supply of material to the breaking points. By arranging and assigning the cutting and fixed knives and their spacing from one another, a good breaking result and a high breaking performance are achieved.
• the fixed cutting knives have a long and a short leg.
• In the fixed cutting knife on the side of the long leg there is a circular recess merging into a straight line and on the side of the short leg only a circular recess, based on the vertical central axis of the pressure vessel.
• the fixed cutting knives are releasably attached to brackets within the pressure vessel; the dimensioning of the long and short leg depends on the position of the fixed knife relative to the outer wall of the pressure vessel, the length of each fixed knife depending on the arrangement to the central axis and the arrangement opposite the round wall of the pressure vessel in the cutting position within the pressure vessel .
• Both the cutting and the fixed knives are subject to great wear in the cutting area. For this reason, these areas are provided with wear protection.
• This wear protection can be achieved by cladding or by mechanically applied wear protection.
• all knives can also be replaced as a complete unit if wear and tear on the main body of the knives has occurred as a result of prolonged wear and tear.
• the passage of the drive shaft through the pressure vessel are blocked by a special stuffing box with a lubricant or. Flushing system sealed.
• the storage and drive of the drive shaft is arranged outside the pressure vessel.
• the shaft passed through the pressure housing is arranged at a distance "a" from the vertical or horizontal central axis.
• Fig. 5 is a view E of a fixed cutting knife.
• the slag crusher consists of the pressure vessel (1) of the drive shaft (2), stuffing boxes (3) on both sides, the rotating knives (4) attached to the shaft and the fixed knives (7), which are arranged below / between the inlet guide plates (12, 12a) and the guide plates of the inlet funnel (12, 15).
• the crushed material is fed to the crushing area via the guide plates of the feed hopper (12, 15).
• the drive shaft (2) is arranged eccentrically or eccentrically at a distance "a" from the vertical central axis (20) of the slag crusher, so that the crushing area is concentrated in the center 5 of the slag crusher. In this way, a uniform loading of the fastening (5) of the rotating knives (4) is achieved and a central discharge of broken material is achieved.
• the rotating cutting blades (4) are located on the drive shaft (2), which is led through the pressure vessel (1) by means of a gland seal (3).
• the rotating cutting knives (4) are connected in a twist-proof manner to the drive shaft (2) by means of fastening screws (5) and feather keys (6).
• the crushing shoulders for the rotating cutting knives (4) during the crushing of the material to be crushed form the fixed cutting knives (7) protruding through the inlet plate (12), which are provided in the crushing area Q with a wear-resistant build-up weld (11). They are individually attached to mounting brackets (8, 10) with mounting screws (9).
• An essential feature of the device according to the invention is that all internal cutting parts (4, 7) that are subject to wear and tear can be quickly replaced if necessary.
• the crushed material to be crushed is discharged from the slag crusher via the cone (18) and outlet nozzle (19) and sent to a landfill.
• Fig. 3 shows a horizontal section C - D through the slag crusher in the sectional plane of the drive shaft (2).
• the drive shaft (2) is supported in two lateral sockets (la) in roller bearings (3a) and secured with sealing elements (3) against escaping pressurized water.
• the shaft (2) with the rotating cutting blades (4) is arranged eccentrically or eccentrically within the pressure housing (1) at a distance "a" from the horizontal central axis (21) of the pressure vessel (1).
• the fixed cutting blades (7) are arranged in slots in the inlet guide plates (12), which are attached to brackets (8) and (13).
• the inlet guide plates (12) and (15) form the so-called inlet or material hopper for the cutting knives (4, 7). Fig.
• FIG. 4 shows a side view E of a fixed cutting knife (7) with a long (7a) and short leg (7b), on the first-mentioned side (7a) a circular recess (7c) merging into a straight line (7c) and on the last-mentioned side (7b) only has a circular recess (7d), based on the vertical central axis (22) of the shaft (2).
• Guide strips (23, 24) are arranged on both legs (7a, 7b).
• the straight part (7c) of the fixed cutting knife (7) is provided with an overlay weld / abrasion-resistant support (11) on the reverse.
• FIG. 5 shows a view E of the fixed cutting knife (7) with a long (7a) and short leg (7b), based on the horizontal central axis (21) of the shaft (2).
• Guide strips (23, 24) are attached to both sides of the fixed cutting blades (7).

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Food Science & Technology (AREA)
• Crushing And Pulverization Processes (AREA)
• Disintegrating Or Milling (AREA)
• Shovels (AREA)
• Soil Working Implements (AREA)
• Harvester Elements (AREA)
• Magnetic Heads (AREA)
• Percussive Tools And Related Accessories (AREA)
• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
• Beans For Foods Or Fodder (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7849961

Family Applications (1)

Country Status (15)

Cited By (1)

Families Citing this family (22)

Citations (5)

Family Cites Families (3)

• 1997
  • 1997-11-27 DE DE19752538A patent/DE19752538C1/de not_active Expired - Lifetime
• 1998
  • 1998-11-26 CN CNB988115468A patent/CN1139650C/zh not_active Expired - Fee Related
  • 1998-11-26 WO PCT/EP1998/007619 patent/WO1999028413A1/de active IP Right Grant
  • 1998-11-26 CZ CZ20001964A patent/CZ291824B6/cs not_active IP Right Cessation
  • 1998-11-26 DK DK98964443T patent/DK1036140T3/da active
  • 1998-11-26 AT AT98964443T patent/ATE211501T1/de active
  • 1998-11-26 US US09/554,781 patent/US7322538B1/en not_active Expired - Fee Related
  • 1998-11-26 DE DE59802815T patent/DE59802815D1/de not_active Expired - Lifetime
  • 1998-11-26 KR KR1020007005685A patent/KR100587459B1/ko not_active IP Right Cessation
  • 1998-11-26 EP EP98964443A patent/EP1036140B1/de not_active Expired - Lifetime
  • 1998-11-26 PL PL98340622A patent/PL189692B1/pl not_active IP Right Cessation
  • 1998-11-26 ES ES98964443T patent/ES2171055T3/es not_active Expired - Lifetime
  • 1998-11-26 CA CA002311776A patent/CA2311776C/en not_active Expired - Fee Related
  • 1998-11-26 JP JP2000523295A patent/JP4273240B2/ja not_active Expired - Lifetime
  • 1998-11-26 PT PT98964443T patent/PT1036140E/pt unknown
  • 1998-11-26 AU AU19643/99A patent/AU741112B2/en not_active Ceased

Patent Citations (5)

Non-Patent Citations (1)

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